Dangerous Heat and Humidity Through Saturday

Dangerously hot and humid conditions are expected to build through Saturday. Additionally, there will be a threat of thunderstorms Friday through Sunday. View this briefing for details. Read More >

Hazardous Weather Conditions

Current conditions at

Philadelphia, Philadelphia International Airport (KPHL)

Lat: 39.87°NLon: 75.23°WElev: 7ft.

Partly Cloudy

97°F

36°C

Humidity	49%
Wind Speed	S 7 G 18 mph
Barometer	30.01 in (1016.1 mb)
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	109°F (43°C)
Last update	2 Jul 11:54 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

3 Miles SW Williamstown NJ

Extreme Heat Warning July 2, 12:30pm until July 4, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning July 2, 12:30pm until July 4, 08:00pm
NOW until 8:00pm Sat
Extreme Heat Warning
This Afternoon
High: 102 °F
Hot
Tonight
Low: 78 °F
Clear
Friday
High: 103 °F
Hot
Friday Night
Low: 78 °F
Isolated
T-storms
Independence Day
High: 101 °F
Sunny then
Chance
T-storms
Saturday Night
Low: 74 °F
Chance
T-storms then
Chance
Showers
Sunday
High: 94 °F
Mostly Sunny
then Showers
Likely
Sunday Night
Low: 69 °F
Showers
Likely

Detailed Forecast

This Afternoon

Sunny and hot, with a high near 102. Heat index values as high as 111. West wind around 5 mph.

Tonight

Clear, with a low around 78. Southwest wind around 5 mph.

Friday

Sunny and hot, with a high near 103. Heat index values as high as 109. Northwest wind 5 to 10 mph.

Friday Night

Isolated showers and thunderstorms before 2am. Mostly clear, with a low around 78. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

Independence Day

A chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 101. West wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 74. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday

Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 94. Chance of precipitation is 60%.

Sunday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. Chance of precipitation is 70%.

Monday

A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 86. Chance of precipitation is 70%.

Monday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.

Tuesday

Partly sunny, with a high near 85.

Tuesday Night

Partly cloudy, with a low around 66.

Wednesday

Mostly sunny, with a high near 83.